[Temporal dynamics of morphologic diversity of the Japanese scallop Mizuhopecten Yessoensis (Jay, 1856)].

The temporal diversity of 11 morphological features of both shell valves in eight cultivated samples of the Japanese scallop M. yessoensis from Alexeev Bay (Popov Island, Sea ofJapan) at different ages and from different generations was analyzed. The sample diversity with respect to each investigated feature was observed. The sample differences in the studied features as well as shell valve variability within the sample were demonstrated to be determined by both mollusk age and sample generation. This phenomenon is considered to be the result of differences in the environmental influence on each mollusk generation under constant technological conditions.